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A flexible multifunctional sensing fiber based on zinc oxide/silver nanowire hybrid network and its preparation method

A technology of zinc oxide nanowires and zinc oxide nanometers, applied in the direction of using electric/magnetic devices to transmit sensing components, plant fibers, fiber processing, etc., can solve the problem of only detecting a single stimulus source

Active Publication Date: 2020-11-24
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the current flexible resistance sensor can only detect a single stimulus, and provides a flexible multifunctional sensing fiber based on a metal and semiconductor double nanowire network, specifically a zinc oxide / silver nanowire hybrid The flexible multifunctional sensing fiber of the network; the flexible multifunctional sensing fiber utilizes the multifunctional characteristics of nano-semiconductors and the synergistic effect of metal nanowires, and has high sensitivity to temperature, pressure and humidity, which is conducive to the preparation of simultaneous detection of pressure. , temperature and humidity multifunctional sensor, which provides a new idea to solve the problem that the current flexible resistive sensor can only detect a single stimulus

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The preparation of flexible multifunctional sensing fibers based on zinc oxide / silver nanowire hybrid network includes the following steps:

[0043] (1) 0.219g zinc acetate dihydrate (Zn(CH 3 COO) 2 2H 2 O) and 0.12g of sodium hydroxide (NaOH) were added to 50mL of absolute ethanol to obtain zinc acetate solution and NaOH solution respectively; the zinc acetate solution was heated in an oil bath at 65°C for 10min, and the NaOH solution was added dropwise to it, and kept Stirring for 10 minutes, cooling to room temperature to obtain a zinc oxide nanoparticle gel solution, wherein the particle size of the zinc oxide seed crystal nanoparticles is 30-60nm;

[0044] Immerse the cotton fiber in the zinc oxide nanoparticle gel solution. After 5 minutes, take out the cotton fiber and put it in a blast drying oven at 120°C for 1 hour; cycle twice to obtain the cotton fiber coated with zinc oxide nanoparticle;

[0045] (2) 1.485g zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) and 0.7g ...

Embodiment 2

[0050] The preparation of flexible multifunctional sensing fibers based on zinc oxide / silver nanowire hybrid network includes the following steps:

[0051] (1) 0.219g zinc acetate dihydrate (Zn(CH 3 COO) 2 2H 2 O) and 0.12g of sodium hydroxide (NaOH) were added to 50mL of absolute ethanol to obtain zinc acetate solution and NaOH solution respectively; the zinc acetate solution was heated in an oil bath at 65°C for 10min, and the NaOH solution was added dropwise to it, and kept Stirring for 10 minutes, cooling to room temperature to obtain a zinc oxide nanoparticle gel solution, wherein the particle size of the zinc oxide seed crystal nanoparticles is 30-60nm;

[0052] Immerse the cotton fiber in the zinc oxide nanoparticle gel solution, and after 1 minute, take out the cotton fiber and put it in a blast drying oven at 120 ° C for 1 hour; cycle twice to obtain the cotton fiber coated with zinc oxide nanoparticle;

[0053] (2) 1.485g zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) and ...

Embodiment 3

[0058] The preparation of flexible multifunctional sensing fibers based on zinc oxide / silver nanowire hybrid network includes the following steps:

[0059] (1) 0.219g zinc acetate dihydrate (Zn(CH 3 COO) 2 2H 2 O) and 0.12g of sodium hydroxide (NaOH) were added to 50mL of absolute ethanol to obtain zinc acetate solution and NaOH solution respectively; the zinc acetate solution was heated in an oil bath at 65°C for 10min, and the NaOH solution was added dropwise to it, and kept Stirring for 10 minutes, cooling to room temperature to obtain a zinc oxide nanoparticle gel solution, wherein the particle size of the zinc oxide seed crystal nanoparticles is 30-60nm;

[0060] Immerse the cotton fiber in the zinc oxide nanoparticle gel solution, and after 3 minutes, take out the cotton fiber and put it in a blast drying oven at 120 ° C for 1 hour; cycle twice to obtain the cotton fiber coated with zinc oxide nanoparticle;

[0061] (2) 1.485g zinc nitrate (Zn(NO 3 ) 2 ·6H 2 O) and...

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Abstract

The invention discloses flexible multifunctional sensing fibers based on a zinc oxide / silver nanowire hybridization network and a preparation method of the flexible multifunctional sensing fibers. Thepreparation method includes: impregnating cotton fibers into a zinc oxide nano-particle gel solution, taking out, and drying to obtain zinc oxide nano-particle wrapped cotton fibers; placing the obtained zinc oxide nano-particle wrapped cotton fibers into zinc oxide reaction precursor liquid, performing hydrothermal reaction, taking out, washing, and drying to obtain zinc oxide nanowire wrapped cotton fibers; impregnating the obtained zinc oxide nanowire wrapped cotton fibers into silver nanowire dispersion liquid to adsorb silver nanowires, taking out, and drying to obtain the flexible multifunctional sensing fibers based on the zinc oxide / silver nanowire hybridization network. The prepared flexible multifunctional sensing fibers is high in responsiveness to external pressure, humidity and temperature and promising in application prospect in fields such as flexible wearable equipment, human-body-simulated electronic skin, intelligent robots, Internet of Things and health monitoring.

Description

technical field [0001] The invention relates to the field of resistance sensing materials, in particular to a multi-sensing performance flexible sensing material and a preparation method thereof. Background technique [0002] Flexible resistive sensing material is a kind of flexible conductive composite material used to sense the change of resistance when the material is stimulated by external factors. According to the type of external factors, it can be divided into strain, chemical and biological flexible resistive sensing materials. These flexible resistive sensing materials have very important application prospects, especially in human health monitoring, humanoid robots, Internet of Things and wearable devices. [0003] Bionics is the main design method for flexible resistive sensing materials, that is, to imitate the human skin of humans and other mammals (strain sensing, temperature sensing, etc.), artificial organs ("electronic nose" gas sensing, "electronic tongue" t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/44D06M11/83G01D5/16D06M101/06
CPCD06M11/44D06M11/83D06M2101/06G01D5/16
Inventor 刘岚刘海州陈松巫运辉刘书奇王萍萍董旭初彭健郑荣敏邓智富
Owner SOUTH CHINA UNIV OF TECH
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